/*
* Copyright (C) 2011 Google, Inc. All Rights Reserved.
* Copyright (C) 2012 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include"config.h"
#include"DOMWindowProperty.h"
#include"DOMWindow.h"
#include"Frame.h"
namespace WebCore {
DOMWindowProperty::DOMWindowProperty(Frame* frame)
: m_frame(frame)
, m_associatedDOMWindow(0)
{
// FIXME: For now it *is* acceptable for a DOMWindowProperty to be created with a null frame.
// See fast/dom/navigator-detached-no-crash.html for the recipe.
// We should fix that. <rdar://problem/11567132>
if (m_frame) {
m_associatedDOMWindow = m_frame->domWindow();
m_associatedDOMWindow->registerProperty(this);
}
}
DOMWindowProperty::~DOMWindowProperty()
{
if (m_associatedDOMWindow)
m_associatedDOMWindow->unregisterProperty(this);
m_associatedDOMWindow = 0;
m_frame = 0;
}
voidDOMWindowProperty::disconnectFrameForPageCache()
{
// If this property is being disconnected from its Frame to enter the PageCache, it must have
// been created with a Frame in the first place.
ASSERT(m_frame);
ASSERT(m_associatedDOMWindow);
m_frame = 0;
}
voidDOMWindowProperty::reconnectFrameFromPageCache(Frame* frame)
{
// If this property is being reconnected to its Frame to enter the PageCache, it must have
// been disconnected from its Frame in the first place and it should still have an associated DOMWindow.
ASSERT(frame);
ASSERT(!m_frame);
ASSERT(frame->domWindow() == m_associatedDOMWindow);
m_frame = frame;
}
voidDOMWindowProperty::willDestroyGlobalObjectInCachedFrame()
{
// If the property has been disconnected from its Frame for the page cache, then it must have originally had a Frame
// and therefore should still have an associated DOMWindow.
ASSERT(!m_frame);
ASSERT(m_associatedDOMWindow);
// DOMWindowProperty lifetime isn't tied directly to the DOMWindow itself so it is important that it unregister
// itself from any DOMWindow it is associated with if that DOMWindow is going away.
if (m_associatedDOMWindow)
m_associatedDOMWindow->unregisterProperty(this);
m_associatedDOMWindow = 0;
m_frame = 0;
}
voidDOMWindowProperty::willDestroyGlobalObjectInFrame()
{
// If the property is getting this callback it must have been created with a Frame/DOMWindow and it should still have them.
ASSERT(m_frame);
ASSERT(m_associatedDOMWindow);
// DOMWindowProperty lifetime isn't tied directly to the DOMWindow itself so it is important that it unregister
// itself from any DOMWindow it is associated with if that DOMWindow is going away.
if (m_associatedDOMWindow)
m_associatedDOMWindow->unregisterProperty(this);
m_associatedDOMWindow = 0;
m_frame = 0;
}
voidDOMWindowProperty::willDetachGlobalObjectFromFrame()
{
// If the property is getting this callback it must have been created with a Frame/DOMWindow and it should still have them.
ASSERT(m_frame);
ASSERT(m_associatedDOMWindow);
}
}